Crumb Rubber Modified Bitumen(CRMB) is a type of modified bitumen composition used primarily in paving or sealing materials. It is made by incorporating crumb rubber into bitumen, usually derived from ground scrap rubber from truck or automobile tires. This composition is further improved by adding spent FCC (fluid catalytic cracking) catalyst and optionally low-value polymers, such a... https://www.cgoc.in/post/what-is-crmb